Improvement in quartz-crushers



M. H. COLLINS.

GRINDING MILL.

" Nu 43,096.' Patented June 14. 1864.

y UNITED "STATES PATENT OFFICE.

rMPaovEMENT 1N QUARTZ-Caucasus.

Specification lhrmiug `part of' Letters Patent No. 43,096, dated June 14, 1864,

To all whom it may concern.:

Be itkuown that T, MICHAEL HENRYCOL- LINs, a resident of Chelsea, in the county of Suffolk and State of Massachusetts, have invented an Improved Mill for Grinding or Pulverizing Substances; and I do hereby declare the same to be fully described in the following specification and represented in the accompanying drawings, of which- Figure l denotes Va top view, and Fig. 2 a

transverse `and vertical section, of it. The nature of my invention is a combination and arrangement of a perforated stationary receiving-breaker, a rotary breaker, a ro- 1 tary annular trough, and one or more pulverizing-wheels applied to one or more rockshafts arranged with respect to the mill-case as hereinafter explained.

In Fig. 2 ot' these drawings, A denotes a vertical shaft, furnished withl a drivin g-pulley, B, and supported within astep or cup, C, which may be provided with mechanism for elevating it and the shaft, so as to adjustthe rotary breaker vertically with reference to the Astationary breaker, to be hereinafter described. There is fastened to this shaft au annular trough, D, from which there arises a conical grinder or breaker, E, which, to fix it to the trough, may rest in a cylindrical socket or recess, F, formed concentrieally within the trough, and provided `with tenons or projections to extend up into the breaker, .so as to clutch it and cause it to revolve with the trough when the latter may be iu -rotation. The breaker isstepresented. in top view in Fig. 3. and in side elevation in Fig. 4, and extends up into a stationary or fellow 'grinder or breaker, G, which is a hollow cone provided with teeth or ribs on its inner surface, and having an eye or passage, b, through which the substances to be ground or brokenare .to enter the machine or mill. This stationary breaker is held in place by a metallic case, H, `which surrounds the rotary trough and breaker and opens at top by a mouth, p, directly into the stationary breaker. The said ense H also covers four or any other suitable number of upright wheels,I I, from the center ot'each of which a shaft, K, projects outwardly and is supported by bearings, c c, carried by a rocker frame or shaft, L, which is arranged outside of the case and has two journals,d d,that rest in bearin gse e, made in armsff, which serve to support thc case H on the tops of the posts g g. Each wheelbeing shown more particularly in Fig. 5, which is an under side view of the rotary trough. These wings and lip project intothe trough The lip lis to prevent dustfroin passing out of the trough t' and inwardly-'toward the shaft A, and so as to be discharged into its step.

In the operation of the machine a material to be crushed and pnlverized enters the mouth of the `case and passes directly between the stationary and rotary breakers, the rotary trough and breaker being supposed to be in revolution. As the material may descend between the breakers, it will be crushed by their joint action upon it, and will be, discharged into the rotary trough, wherein it will be subj ected to the pul verizing action ot' such trough and its rotary wheels. These wheels, by the arrangement of their shafts and their application to rock-shafts, as described, will be put in revolution by the trough, and will roll upon and reduce or comminute the matters in such trough, these matters, when'fpulverized sufficiently, being discharged from the trough by centrifugal force and over its'extreme edge and into the `auxiliary or stationary annular trough t', through and out of which they will Vbe driven by the action 'of ,the lseries of wings m m, and finally be discharged from the ease through its opening 7c. Each of the shafts of the wheels is provided with a broad annular flange, n, whichgoes laround it and against the opening h and serves to prevent the discharge of dust through the opening and upon or into the bearings of the shaft.

By the application of the wheel-shaft, to rocker-shafts and the arrangement of the lat- Vter andthe supplortin g-bearin gs of the wheelshafts entirely outside of the case H, the bearings, and journals otthe'shaftswill be better protected from the dust produced in grinding than when inside of the ease. l

I am aware that a rotary trough and a series 'of wheels disposed. vertically therein and having their axles arranged in radial direct-ions and extending toward the axis .of the trough have long been in common use. I am also 'aware that a rotary breaker and a surrounding stationary fellouT breaker or Crusher have before been combined and used with millstones or grinding-surfaces. I am also aware .of the mechanism and devices described and and pulverizing mill, in which the rotary trough, Wheels, and breakers or crushers are arranged together and' Within a case, H, as

-1. The arrangement of each of the pulverizin g-Wheel shafts K and its rocker frame or shaft L and ytheir journals andV bearings relatively to the said caseH, in manner substantially as explained, the said shaft K, under such arrangement, heilig made to project out of the case H,.and to have its journals and 'bearings and its rockerv frame or shaft L and -the Y journalsand bearings thereoffdisposed outside ofthe case, substantially as specified.

2. The arrangement of the shafts K L and their journals'and hearin gs relatively to each other as described, .when disposed with respect tothe case H and the pulverizing Wheels arranged therein substantiallyl in manner as specified, the said shafts K and L, under this latter-arrangement, having their axes at right angles to one another. 3. The rotarygrinding-trough,as madeivith the lip Z, arranged with respect to its Wings m m, and the receiving trough i, disposed Ibelow the rotary trough. l

, M. H. COLLINS. I

Witnesses: y

R. H. EDDY,

F. P. HALE, Jr. 

